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Easy Steak Fajitas Recipe — with Onions, Peppers, and Mushrooms

Feed a family using only one pound of of steak, when you turn yours into Easy Steak Fajitas with all the fixings! Sooo good, and so easy to throw together.

So what’s a girl to do when she finds a little piece of half price clearance steak at ALDI? What else but make Steak Fajitas with Onions, Peppers, and Mushrooms, of course! Thin, lean cuts of beef like this one lend themselves an easy steak fajitas recipe, where you just quick sear the steak whole in its flavorful marinade and then slice it even more thinly.

While I do love making fajitas of all kinds for a quick & crowd-pleasing weeknight dinner, I’ll confess: I usually just wing it rather than using a specific recipe. This specific steak fajitas recipe encapsulates what I did this time (and they were goood… better than last time, so it’s a good thing I wrote it down), but it’s quite a forgiving process. Don’t like mushrooms? Leave them out and maybe add another bell pepper. Don’t like steak? Try chicken, maybe using this chicken fajitas recipe for ideas (see? did it differently there, and they were still good, lol)… or you can try these chipotle lime shrimp in fajitas, rather than in their original taco salad.

Easy steak fajitas with onions, pepper, and mushrooms -- Gluten free (use GF tortillas) and low carb (use a low carb wrap)!

But let’s get back to steak! I don’t post a lot of steak recipes here, but it’s much easier on your budget to use just a pound of beef and stretch it out with all of these assorted veggies & accoutrements, rather than going with a basic steak-and-potatoes recipe that requires more meat per person.

Note: I left my steak on the pan about a minute too long while taking pictures (doh), so you might go for just slightly pinker. You’ll want to aim for medium rare, and remember that the steak will continue cooking slightly after you remove it from the pan and let it rest. (Rest assured, however, that this in no way reduced our enjoyment of these flavorful steak fajitas!)

Easy Steak Fajitas

Easy steak fajitas with onions, pepper, and mushrooms -- Gluten free (use GF tortillas) and low carb (use a low carb wrap)!

Ingredients

1 lb thin steak (I used top round)
Juice of one small lime
3 cloves garlic, chopped
1/2 of a serrano or jalapeño pepper, chopped
1 tsp cumin
1 tsp chili powder
1 tsp seasoned salt
4 Tbsp olive oil
1 medium yellow onion, quartered then sliced into strips
2 small bell peppers (I used red and yellow) or one large one, sliced into strips
8 oz sliced mushrooms

Directions

Easy steak fajitas with onions, pepper, and mushrooms -- Gluten free (use GF tortillas) and low carb (use a low carb wrap)!

Top steak with: 2 cloves chopped garlic, 1 Tbsp of the olive oil, lime juice, cumin, chili powder, serrano or jalapeño, and seasoned salt, then let marinate. (I just quick marinated while slicing the rest of the veggies, but you can let it go longer in the fridge for more flavor and tenderness.)

After marinating: Heat 1 Tbsp of olive oil in your 12″ cast iron skillet on medium-high heat until shimmering, swirl to coat the bottom of the pan, then add the steak and cook for three minutes per side (or until cooked through medium rare). Remove steak from pan and let it rest while you cook the veggies.

Easy steak fajitas with onions, pepper, and mushrooms -- Gluten free (use GF tortillas) and low carb (use a low carb wrap)!

Add another Tbsp olive oil to the same skillet and scrape up the browned bits on the bottom. Add onion to the pan and cook for one minute over medium-high heat. Add one clove chopped garlic and the mushrooms and cook for another two minutes, stirring occasionally. Add another Tbsp of olive oil and the bell peppers, then continue sauteing for another three minutes, stirring occasionally, until peppers are crisp-tender. Turn off the heat under your pan.

Slice steak thinly against the grain. Serve steak fajitas with accompanying veggies on tortillas with your choice of toppings. (Shredded cheese, avocado, sour cream, tomatoes, lime wedges, pico de gallo, salsa, etc.)

Note: Run your oven fan and open a window if possible, and avoid breathing in the peppery fumes — this recipe is kind of smoky, but worth it! 🙂

Yum, look at the char on these steak fajitas!

Easy steak fajitas recipe with onions, pepper, and mushrooms -- Gluten free (use GF tortillas) and low carb (use a low carb wrap)!

This is another reason to love your cast iron skillet: It makes for such a pretty sear in foods like fajitas! You don’t even need to add any extra seasonings to the veggies when you make them this way, because they pick up what’s left in the pan from the steak and let all the flavors work together as a whole. So good! My carnivorous family devoured all of the steak and most of the veggies, but the leftover peppers/onions/mushrooms worked very well in veggie quesadillas for lunch the next day.

The meat and veggies here are naturally low carb and gluten free, so MashupDad enjoyed his steak fajitas on a low carb wrap (and you can easily serve them on corn or other gluten free tortillas, if you’re gluten free).

Easy Steak Fajitas, printable recipe

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5 from 5 votes

Easy Steak Fajitas

It’s much easier on your budget to stretch out one pound of steak with all of these assorted veggies & accoutrements, rather than going with a basic steak-and-potatoes recipe that requires more meat per person.
Course dinner
Total Time 20 minutes
Servings 4

Ingredients

  • 1 lb thin, lean steak (I used top round)
  • Juice of one small lime
  • 3 cloves garlic, chopped
  • 1/2 of a serrano or jalapeño pepper, chopped
  • 1 tsp cumin
  • 1 tsp chili powder
  • 1 tsp seasoned salt
  • 4 Tbsp olive oil
  • 1 medium yellow onion, quartered then sliced into strips
  • 2 small bell peppers or one large one (I used red and yellow), sliced into strips
  • 8 oz sliced mushrooms

Instructions

  • Top steak with: 2 cloves chopped garlic, 1 Tbsp of the olive oil, lime juice, cumin, chili powder, serrano or jalapeño, and seasoned salt, then let marinate. (I just quick marinated while slicing the rest of the veggies, but you can let it go longer in the fridge for more flavor and tenderness.)
  • After marinating: Heat 1 Tbsp of olive oil in your 12″ cast iron skillet on medium-high heat until shimmering, swirl to coat the bottom of the pan, then add the steak and cook for three minutes per side (or until cooked through medium rare). Remove steak from pan and let it rest while you cook the veggies.
  • Add another Tbsp olive oil to the same skillet and scrape up the browned bits on the bottom. Add onion to the pan and cook for one minute over medium-high heat. Add one clove chopped garlic and the mushrooms and cook for another two minutes, stirring occasionally. Add another Tbsp of olive oil and the bell peppers, then continue sauteing for another three minutes, stirring occasionally, until peppers are crisp-tender. Turn off the heat under your pan.
  • Slice steak thinly against the grain. Serve steak fajitas with accompanying veggies on tortillas with your choice of toppings. (Shredded cheese, avocado, sour cream, tomatoes, lime wedges, pico de gallo, salsa, etc.)

Notes

The meat and veggies here are naturally low carb and gluten free, so MashupDad enjoyed his steak fajitas on a low carb wrap (and you can easily serve them on corn or other gluten free tortillas, if you’re gluten free). Run your oven fan and open a window if possible, and avoid breathing in the peppery fumes — this recipe is kind of smoky, but worth it! 🙂

Recipes in the real world

weekly ALDI meal plans from Mashup Mom -- six complete dinners for four, $60 out the door! MashupMom.com, every Wednesday.

Be sure not to miss the free weekly ALDI meal plans, which show you how to use these easy family recipes to meal plan affordably and realistically for your family. Or, find more recipe ideas with the Recipe Search!

Recipe Rating




Vicki Birk

Sunday 15th of September 2019

I just made this; it was unbelievably great! No fajita mix; just this recipe! The best I've ever had!!! Thank you for your recipe!!

Amanda Prado

Tuesday 8th of January 2019

BEAUTIFUL! I didn't have any jalapenos or mushrooms, but I'm not even sure how they could have made this any better! I did add plain sea salt to the steak, but only because we like salty. ;) Hubby cooked the steak on the griddle and I whipped up a side of guacamole. This is a new staple in my recipe rotation. ^_^ THANK YOU!

Last Minute Dinners – 30 Minute Dinner Recipes For Busy Nights – The Blog Box

Monday 15th of January 2018

[…] Easy Steak Fajitas| Mashup Mom: In just 30 minutes you can make these flavorful fajitas. Rich steak paired with peppers and onions, and top with your favorite toppings. […]

Last Minute Dinners - 30 Minute Dinner Recipes For Busy Nights

Sunday 14th of January 2018

[…] Easy Steak Fajitas| Mashup Mom: In just 30 minutes you can make these flavorful fajitas. Rich steak paired with peppers and onions, and top with your favorite toppings. […]

rachel

Thursday 7th of December 2017

Awesome, guys! (After reading your comments, now I really want fajitas again tonight but have nothing to make them with... dangit ;) )

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